I try to play 
but no matter how much I mess with the build I always end up too tanky and not enough damage or too squishy with moderate damage. I usually go 
and then defensive with a 
thrown in somewhere, but I never get kills in fights. I've also tried full bruiser damage, like 
and it didn't work either. Rek'Sai players/mains, how do you play Rek'sai where she has enough defense to tank usefully but enough damage to actually get kills?
I think Cinderhulk and Black Cleaver are her core items for some early health, CDR, and armor reduction. Many build full-tank afterwards, but you could easily get an offensive item at this point since you have enough health to be relatively durable. I wouldn't really recommend more than two offensive items (including Black Cleaver) unless your team has several tanks or you get pretty far ahead.
Her ratios have been nerfed to shit. She is no longer viable with a damage build.
They use her in LCS as a pure tank. I do not recommend this, since in SoloQ playing tanks is frustrating since you can't carry yourself and your team can throw regardless of your initiations (and her initiation isn't the strongest either, just has a low cooldown).
